Color
#128fca
#128fcargb(18, 143, 202)hsl(199, 84%, 43%)oklch(0.617 0.132 237.4)Colors that go with #128fca
Charcoal, Red and Royal Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #128fca: softer than #000 and cool enough to feel like part of the same palette.
Red #ff0000
split-complementshippedRed is a split-complement of #128fca: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Royal Blue #4169e1
analogousshippedRoyal Blue is #128fca's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Copper #b87333
complementaryshippedCopper sits directly opposite #128fca on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #128fca in 11 real palettes, including Beach Hut and Wired's brand system, as the supporting colour.
Blue #0000ff
shipped9 real palettes, including Readymag's brand system and Qualcomm's brand system put Blue beside #128fca, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #128fca: 8 real palettes, including Hershey's's brand system and Glacier, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #128fca in 9 real palettes, including NASCAR's brand system and Retro Pop, as the supporting colour.
Real palettes that use #128fca
Tints & shades
Harmonies
Contrast
| #128fca as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.62:1 | fail | pass | fail | |
Aaon black | 5.81:1 | pass | pass | fail |
|
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #128fca as the background.
Brands using this color
Fonts for this mood
#128fca reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #128fca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/128fca-9cb3c4-df4e66-1f232d-e9f1f0?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md